Conclusion

The Women's Rumbles are a lot different to predict than the men's version. While both rosters are full of talented performers just waiting for a spot to open up, there are so many more men that could potentially win their matches than women who could win their match. Anyone including Seth Rollins, Braun Strowman, Randy Orton, AJ Styles, Brock Lesnar, Roman Reigns or Kevin Owens could feasibly win.
For the women, the biggest threats are Baszler, Rousey (if she returns), Flair and Banks. Bliss would also have a chance but she's been in title pictures in 2019 almost as much as Flair. And if Nia Jax also returns from injury, she's a threat to win. ACL injuries are tough to gauge, however, so just because she might be at the WWE PC doesn't necessarily mean she's 100% again and ready to go.
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When all is said and done, it would be a shock to me if Flair and Baszler aren't two of the final four. The Queen isn't a Champion at the moment but is still booked as if she is.
Her week long battle with Sarah Logan didn't make me believe that she "has the highest losing record of anyone on the roster" like she claimed recently when interviewed by SK's own Gary Cassidy. We might have a surprise or two regarding two of the final participants but both of the Queens are likely to last until the end.